Automatic packing.



e. A. "wxsmm. AUTOMATIC PACKING. APPLICATION FILED JULY 9, 19.12.

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Pafiented Feb. 11, 1913. 2 SHEETS-SHEET 2.

.GEORGE A. WISMER, OF NEW YORK, Y.

AUTOMATIC PACKING.

Specification of Letters Patent. Patented Feb, 11, 1913.

Application filed ihily 9, 1912. Serial No. 708,527.

To all whom it may concern:

Be it known that I, Gnonon A. WISMER, a citizen of the United States, residing at New York, in the county of New York and State of New York have invented certain new and useful Improvements in Automatic Packing; and I do declare the following to be a full, clear, and exact description, of the invention, such as will enable others skilled in the art to which it appertains to make and use the same...

This invention relates to an automatic packing for piston rods, rams, cylirlers and the'likeyand more especially: those used in handling and pumping liquids or fluids of any kind regardless of the pressure thereof] The object of the invention is to produce an effective packing which will automatically adjust itself with varying tension against the rod plunger which it is applied.

- it-h this and other objects in View, the

or cylinder .to

n invention consists of certain-novel features of" construction, and the combination and arrangement of parts as will be more fully described and claimed.

' 'In the accompanying drawings: Figure 1 represents a longitudinal central section of a stufling box equipped with one form of this improved packing; Fig. 2 is a horizontal section taken on the line 2-2 of F ig.e1; Flg. 3 is a longitudinal central section of-another form of the invention show-' -ing it applied; Fig. 4 is a detail cross sectional View of the packing shownin Fig. 3; Fig. 5 is a longitudinal sectional view of still another form of the invention applied; Fig. 6 is a detail cross sectional perspective View of the packing shown in Fig. 5.

, In the embodiment illustrated in Figs. 1

- and 2 a packing ring 1 is shown constructed for use in connectionwith piston rods or the like where the wear takes place on the inside of the'ring against the moving rod or plunger A. This ring 1 is composed of any curely held in the stufiing box byfthe usual gland E secured by bolts F. Each of these rings 1 is provided with the usual opposite fiat faces 2 and 3, and in one of these faces is formed aplurality of arcuate between said channels maybe gradually increased in thickness from the edge remote to a reservoir hereinafter described and forming one wall thereof. These channels are here shown curved, and merge at their outer ends in a recess 5 formed on the periphery of ther'ing adjacent the face 2 having the channels therein, and which when the ring'is applied, forms a fluid reservoir connected by thev channels 4 with the inner or piston engaging face whereby any fluid which enters the stufiing box around the rod A is conducted to the reservoir or resets voirs 5, accordingto the number of rings employed. This reservoir being constantly under more or less pressure, depending upon. the pressure carried in the cyllnder C and the amount of leakage, increases or releases the tension automatically of the packing ring 1 against the rod or plunger A. This automatic packing allows the rod whichit surrounds to work freely without unnecessary fri'htion when the machine to which the packing is applled is operated under low pressure. When pressure is increased the channels 4 serve as'free passages to the res ervoir o and the pressure in said reservoir is correspondingly increased, which causes an additional tension of the ring 1 on the rod A. When the operating pressure is reduced or changed the pressure in reservoir 5 is correspondingly reduced or changed, which automatically reduces or changes the tension upon packing ring 1 against rod A.

It will thus be obvious that the packing is automatic, exerting only sufficient tension to prevent leakage at existing pressures and that the tension is constantly varying according to the operating pressures, which serves to reduce friction to a minimum.

In Figs. 3- and i the rings 1 are shown placed around a piston A where the wear occurs on the outside of the rings or against thegvalls of the cylinder G In this form of packi'ngs the )rinciple involved is the same, the only di erence being that the reservoir 5- is arranged at the inner instead of the outer face of the ring 1 and the curved .channels 4 extending from-its inner edge to its periphery in order that the partitions midway the width of the ring between its wearing surface and its outer edge.

channels 4 extend from the reservoir 5 to 'packing is shown which is applied to a rod Where the Wear takes place on the inside of the ring, the canals or channels 4. extending from the 1111161 face to a reservolr 5 located 'From the foregoing description taken in connection with the accompanying draw ings,-the construction and operation of the invention Will be readily understood with out requiring a more extended explanation.

Various changes in the form, proportion and the minor details of construction may be resorted to Without departing from the principle or sacrificing any of the advan tages of the invention as claimed.

I claim as my invention: 1. A pa clung having an annular recess remote from its wearing surface and having" also having arcuate channels extending from the center thereof. and communicating with said recess, and partitions between said channels increasing in width toward said annular recess.

In testimony whereof I have hereunto set my hand in presence of two subscribing Witnesses.

GEORGE W; ADAMS, W. 0. 000mm.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

